Shade holder for portable electric lamps



July 22, 1930. M. B. BOWEN SHADE HOLDER FOR PORTABLE ELECTRIC LAMPSFiled Aug. 20, 1929 F l G. 2

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lNVENTOR MICHREL B. BOWEN ATTORNEYS Patented July 22, 1930 UNITED STATESOFF ICE MICHAEL B. BOWEN, or DECATUR, rumors, ASSIGNOR TO rAnrnsMANUFACTURING COMPANY, or DECATUR, rr mnorsn CORPORATION orILLrNoIsSHADE HOLDER ron PORTABLE ELECrRIC LAMPS f Application filed. August 20,1929. Serial No. 387,192. f

My invention relates to that class of shade holders employed in portabledesk lamps such as are described in United States Letters Patent No.-1,225,051, issued May 8, 1917, in

which the shade which encloses the illuminating element is slidablymounted upon a plate depending from the arm on the standard.

These plates were cast metal, having V-shaped grooves machined in theiredges. The machining of these grooves is an expensive operation, and inaddition to the expense, the shade is left free to slide easily,.

with the result that frequently, in moving the lamp, the shade drops offand is broken.

My invention has for its object, to provide a simple means for formingthis plate out of a stamping, and at the same time provide means whichwill effectually prevent the shade being dislodged accidentally, thoughpermitting its comparatively easy removal from the holder.

My means for accomplishing the foregoing object may be more easilyunderstood by reference to the accompanying drawings, which are heretoannexed and are a part of this specification, inwhich- Fig. l is a planView of the blank from which my improved plate is formed;

Fig. 2 is a vertical section on the line 22 in Fig. l;

Fig. 3 is a front elevation of the plate formed from the blank shown inFig. 1;

Fig. 4 is a cross section on the line H in Fig. 3, the securing meansbeing shown in dotted lines;

Fig. 5 is a cross section on the line 55 in Fig. 3; and

Fig. 6 is a rear elevation of a shade holder provided with tongues orguides fitted to the V-shaped groove of the plate.

the shape shown by Fig. 3. This bringsthe apertures 3 in register witheach other, and the protuberances, lopposite to each other projectinginto the V-shaped groove 9 formed by the bending of the blah-k1 uponitself, as clearly seen in Figs. 3and4. A shade holder 10, formed inaccordance with the holder described in my copending application, SerialNo. 387,189, filed August 20, 1929, comprises'a pair of plates 5 (onlythe rear plate'being shown herein) which are fastened together by.screws 6. These plates 5 are formedwith central arch-like openings, thevertical edges of which are provided with V-shaped tongues or guides 8,which are fitted to and coincide with the V-shaped groove 9, as clearlyseen on Figs. 5 and 6. Recesses 11 are formed in the V-shaped tongues orguides 8, adapted to receive the protuberances 4 formed on the bevel 2of the blanked plate 1. A

The result of this construction is obvious. When the shade holder 5 isplaced upon the plate formed from the blank 1, the V-shaped tongues orguides 8 register with the V-shaped groove 9 in the plate 1, and as theplate 1 slides into the holder 5, theprotuberan'ces 4 on the bevel 2 ofplate 1 enter the recesses 11 formed in the V-shaped tongues or guides8, and the holder is secured against accidental dislodgment.

It will be apparent from the foregoing description that by thisconstruction the supporting plate 1 is formed entirely of sheet metal,which is stamped and therefore requires no machine work thereupon, thusmaterially'reducing the cost of manufacture.

Having described my invention, what I regard as new, and desire tosecure by Letters Patent of the United States, is:

1. A device of the character described, comprising a metal plate, havinga peripheral bevel formed thereon, the edges of said plate, when foldedback upon itself, forming a V-shaped groove, protuberances formed onsaid bevel, which correspond in position when said plate is folded, ashade holder, V-sl1aped guides thereon, which coincide with saidV-shaped groove, there being recesses in said guides which register withthe protuberances on the bevels when said shade holder is in position.

2. A device of the character described, comprising a metal plate, havinga peripheral bevel formed thereon, the edges of said plate, when foldedback upon itself, forming a V-shaped groove, and-protuberances formed onsaid bevel which correspond in position when said plate is folded.

3. A device of' the character described,

comprising a metal plate having a V-shaped groove formed thereon, ashade holder having V-shaped guides thereon, and means on said V-shapedguides to prevent accidental disengagement from said V-shaped groove.

4. A device of the character described, comprising a metal plate, havinga peripheral bevel formed thereon, the edges of said plate, when foldedback upon itself, forming a V-shaped groove, recesses formed in saidbevel, which correspond in position whenv 7 said plate is folded, ashade holder, V-shaped guides thereon, which coincide with said V-shapedgroove, there being protuberan'ces on said guides which register withthe re- I cesses in the bevels When said shade holder is in position.

MICHAEL B. BOVEN.

